| The Taklimakan Desert is the largest desert in China. The complicated environment has very important influence on our country's climate of droughty area. This article uses the data of three dimensional wind speed, the temperature and the water vapor pulsation of 2006.4 and 2006.8 collected by Tazhong station which is the only atmospheric environment observing experimental station presently in the world that goes deep into flowing desert hinterland 200km above the Taklimakan Desert. This article makes use of winds, temperature, specific humidity grads data from 80m observing tower. It gets momentum flux, the sensible heat flux and the latent heat flux from 10m height of spring and summer by handling the vortex correlation method, the aerodynamic force research method computation, has carried on the analysis to them under the different weather's daily variation characteristic. And compare the result got by the twocomputational methods. By computing it gets momentum bulk transfer coefficient CD,thethermal bulk transfer coefficient CH and water vapor bulk transfer coefficient CE.The resultshows that: in Tazhong area surface heat transfers by sensible heat flux primarily. Latent heat flux ratio is smaller than sensible heat flux for one magnitude. Sensible heat flux is generally negative at night and positive in daytime, the time when sign changes are about around sunriseand sunset. The momentum bulk transfer coefficient CD,the thermal bulk transfer coefficient CH and water vapor bulk transfer coefficient CE got by using the vortex correlation method is respectively 4.7×10-3,2.13×10-3 and 0.875×10-3. The relation between CD,CH,CE and the stability z/L: Under the stable stratification, CD increases along with reducing of the stability, and the stratification's value CH and CE is quite separate ; under the unstablestratification, CD increases along with reducing of the instability , the value of CH and CE has trend to increase along with reducing of the instability . By using the gradient material from the tenth floor of the 80m observing tower , and the flux data from ten meters height, it computes different altitude's momentum transfer coefficientKM, the interchange of heat coefficient KH as well as the water vapor exchange coefficient KW in Tazhong : The turbulent exchange coefficient KM,KH,KW , has the obvious diurnal variation characteristic , that is small at night, and big daytime . KM,KH increase along with the wind speed increasing. And KM,KH and KW increase along withthe height markup, when it is spring stable stratification, each height of KH/KM mean value is 0.47 ; When it is in unstable stratification, each height's mean value is 1.52. Under the stable stratification of summer each height's mean value of KH/KM is 0.65; in unstable stratification each height's mean value is 1.36. In the end, it computes the spring, summer season's surface roughness value z0 whose ranges between 6.01×10-6～6.63×10(-4) m in Tazhong; the average value is 8.01×10-5m, zero value displacement's is approximately 0.08m.
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